*{
	margin: 0;
	padding: 0;
}
#sel{
	width: 900px;
	height:400px;
	border: 1px solid black;
	margin: 100px auto;
	
}	
#header{
	height: 50px;
	width: 900px;
	background-color: brown;
	line-height: 50px;
	box-sizing: border-box;
	padding: 0 20px;
}
#header #in1{
	
	/* width: 10px;
	height: 10px; */
}
#header span:nth-of-type(1){
	margin-left: 20px;
}
#header span:nth-of-type(2){
	margin-left: 300px;
}
#header span:nth-of-type(3){
	margin-left: 80px;
}
#header span:nth-of-type(4){
	margin-left: 80px;
}
#header span:nth-of-type(5){
	margin-left: 80px;
}
/* 中间 */
#center{
	width: 900px;
	height: 200px;
	box-sizing: border-box;
	padding: 50px 20px;
	background-color: bisque;
	margin: 50px 0;
}
#center #in2{
	height: 100px;
	line-height: 100px;
	margin-right: 20px;
}
#center img{
	width: 100px;
	height: 100px;
}

/* 底部 */
#footer{
	width: 900px;
	height: 50px;
	background-color: lawngreen;
	box-sizing: border-box;
	padding:0  20px;
	display: flex;
	justify-content: space-between;
	
}
#footer #fleft{
	width: 100px;
	height: 50px;
	line-height: 50px;
	
}
#footer #fright{
	width: 270px;
	height: 50px;
	box-sizing: border-box;
	padding: 5px;
}
#footer #fright #text{
	float: left;

}
#footer #fright button{
	float: right;
	width:150px;
	height: 40px;
	background-color: red;
	border: none;
	color: white;
}